Nail-puller



(;No Model.) 4. 2 Sheets-Sheet 1.

G. J. CAPEWELL. NAIL FULLER.

No. 505,815. Patented Oct. 3, 1893.

.No Model.)

2 Sheets-Sheet 2- G. J. O'APEWELL.

' NAIL PULLER. No. 505,815. Patented Oct. 3.1.893.

in I

vlrkavdaw UNITED STATES PATENT OFFICE.

GEORGE J. CAPEWELL, OF HARTFORD, CONNECTICUT.

NAl L- PU LLER.

SPECIFICATION forming part of Letters Patent No. 505,815, dated October3, 1893.

Application filed September 7, 1892. Serial No. 445,276. (No model.)

, To all whom it may concern.-

Be it known that I, GEORGE J. OAPEWELL, a citizen of the United States,residing at Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inNaiLPullers, of which the following is a full, clear, and exactspecification.

The invention relates to the class of tools made for extracting nailsfrom boxes, cases, planks, boards or other places in which nails areset, the object being to provide a simple, powerful and easily operatedtool of this class which can be used to rapidly'draw nails withoutbending and twisting them or mar-ring the material in which they aredriven.

To this end the invention resides in a tool consisting of a guidingstandard, a casing with grasping jaws, sliding upon the standard, acasing with a hammer-bar, hinged to the sliding j aw-casing, and alinkhinged to the standard and to the hammer-bar casing, as moreparticularly hereinafter described and pointed out in the claims.

Referring to the accompanying drawings: Figure 1 is a side view of thepuller. Fig. 2 is an edge view of the same. Fig. 3 is a verticalsection. Fig. 4. is a side view of the puller illustrating the positionof the parts in extracting a nail. Fig. 5 is a bottom view of thepuller, and Fig. 6 is an edge view of a grasping jaw.

In the views 1 indicates a standard which is usually formed of a base 2upon which the puller is stood when in use, and an upward projectingpost 3 which supports the jaw casing 4. This casing which is preferablya hollow casting having an arm with a sleeve 5 sliding on the post 3,holds the nail grasping jaws 6, that in the construction shown havetheir outer corners rounded off and their inner edges hollowed out.Within the socket of the casing on their outer edges these jaws, thatare normally forced apart by means of a spring 7, are provided withinclined or wedge faces 8 adapted to slide in contact with the rolls 9journaled in the bottom of the casing so as to prevent the entireremoval of the jaws but cause them to close together when forced downWithout friction. To the upper part of this jaw casingis hinged a casing10, preferably a hollow casting, which supports a hammer bar 11, havinga suitable handle, in line with the upper end of the pulling jaws thatare driven to grasp the nail by the blows of the bar which has a freereciprocation in its casing, except as limited by the stop-screw 12 thattravels in a slot 13 to prevent the entire removal of the bar. Toaprojection on one side of the hammer-bar casing one end of a link 14 ishinged, the opposite end of the link being hinged to the base 2 of thestandard at the side of the post 3.

In use the base of the standard is placed adjacent to the nail and whenthe two casings are in line, by means of the hammer bar, the jaws areforced down to grasp the head. When the head is securely clutched thehandle bar and its casing are bent over which action causes this casingto lift the casing with the jaws, upward in a perpendicular line, and

*draw the nail straight out without bending or twisting the nail,enlarging the hole from which it is pulled or moving the instrument soas to scratch or mar the surface of the material in which the nail wasdriven. When the handle bar is bent over the link forms the fulcrum ofthe lever and in the commencement of the pull the movable fulcrum ofthis lever handle and the hinges are in such relation that the leverageraises the jaws slowly with great power for starting the nail, but asthe link is thrown over the jaws are lifted more rapidly after the nailhas been started, and requires less power.

I claim as my invention- 1. A nail puller, consisting of a standard, acasing bearing grasping jaws sliding upon the standard, and areciprocating lever handle with a movable fulcrum pivotally connected tothe jaw casing, substantially as specified.

2. A nail puller, consisting of a standard, grasping jaws adapted toslide up and down the standard, an oscillating and reciprocating hammerbar connected with the jaws, and a connection between the hammer bar andthe standard, substantially as specified.

3. A nail puller, consisting of a standard, a casing bearing graspingjaws, a hammer bar hinged to the jaw casing, and a link connecting thebar with the standard, substantially as specified.

4. A nail puller consisting of a standard, a

casing bearing grasping jaws sliding upon the standard, and a hammer barhinged to the casing and connected with the standard, substantially asspecified.

5 5. A nail puller consisting of a standard, a casing bearing graspingjaws sliding upon the standard, a bar casing hinged to the jaw casing, ahammer bar movable in the bar casing, and a link connecting the barcasing with the 10 standard, substantially as specified.

6. In combination in a nail puller, a casing bearing grasping jaws withwedges on their outer edges, the opening in the casing above the wedgesbeing smaller than below, and rollers in the enlarged part of theopening in [5 the casing below the wedges and in contact with them,substantially as specified.

H. R. WILLIAMS, J. C. STEVENS.

